/**     
 * @Title: NettyHttpServletRequest.java   
 * @Package me.springboot.netty.servlet   
 * @Description: TODO
 * @author weiwei 
 * @date 2017年8月25日 下午2:19:58   
 * @version V1.0     
 */
package me.springboot.netty.servlet;

import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.HttpRequest;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpUpgradeHandler;
import javax.servlet.http.Part;

import me.springboot.netty.context.NettyAsyncContext;
import me.springboot.netty.context.NettyEmbeddedContext;
import me.springboot.netty.dispatcher.NettyRequestDispatcher;

/**
 * @ClassName: NettyHttpServletRequest
 * @Description: TODO
 * @author weiwei
 * @date 2017年8月25日 下午2:19:58
 * 
 */
public class NettyHttpServletRequest implements HttpServletRequest {

	public static final String DISPATCHER_TYPE = NettyRequestDispatcher.class.getName() + ".DISPATCHER_TYPE";

	private final ChannelHandlerContext ctx;

	private final NettyEmbeddedContext servletContext;

	private final HttpRequest request;

	private final ServletInputStream inputStream;

	private final Map<String, Object> attributes;

	private boolean asyncSupported = true;

	private NettyAsyncContext asyncContext;

	private HttpServletResponse servletResponse;

	public NettyHttpServletRequest(ChannelHandlerContext ctx, NettyEmbeddedContext servletContext, HttpRequest request, HttpServletResponse servletResponse,
			ServletInputStream inputStream) {
		this.ctx = ctx;
		this.servletContext = servletContext;
		this.request = request;
		this.servletResponse = servletResponse;
		this.inputStream = inputStream;
		this.attributes = new HashMap<String, Object>();
	}

	HttpRequest getNettyRequest() {
		return request;
	}

	@Override
	public String getAuthType() {
		return null;
	}

	@Override
	public Cookie[] getCookies() {
		return new Cookie[0];
	}

	@Override
	public long getDateHeader(String name) {
		return 0;
	}

	@Override
	public String getHeader(String name) {
		return null;
	}

	@Override
	public Enumeration<String> getHeaders(String name) {
		return Collections.emptyEnumeration();
	}

	@Override
	public Enumeration<String> getHeaderNames() {
		return Collections.emptyEnumeration();
	}

	@Override
	public int getIntHeader(String name) {
		return 0;
	}

	@Override
	public String getMethod() {
		return request.method().name();
	}

	@Override
	public String getPathInfo() {
		return null;
	}

	@Override
	public String getPathTranslated() {
		return null;
	}

	@Override
	public String getContextPath() {
		String requestURI = getRequestURI();
		// FIXME implement properly
		return "/".equals(requestURI) ? "" : requestURI;
	}

	@Override
	public String getQueryString() {
		return null;
	}

	@Override
	public String getRemoteUser() {
		return null;
	}

	@Override
	public boolean isUserInRole(String role) {
		return false;
	}

	@Override
	public Principal getUserPrincipal() {
		return null;
	}

	@Override
	public String getRequestedSessionId() {
		return null;
	}

	@Override
	public String getRequestURI() {
		return request.uri();
	}

	@Override
	public StringBuffer getRequestURL() {
		return null;
	}

	@Override
	public String getServletPath() {
		return getRequestURI();
	}

	@Override
	public HttpSession getSession(boolean create) {
		return null;
	}

	@Override
	public HttpSession getSession() {
		return null;
	}

	@Override
	public String changeSessionId() {
		return null;
	}

	@Override
	public boolean isRequestedSessionIdValid() {
		return false;
	}

	@Override
	public boolean isRequestedSessionIdFromCookie() {
		return false;
	}

	@Override
	public boolean isRequestedSessionIdFromURL() {
		return false;
	}

	@Override
	public boolean isRequestedSessionIdFromUrl() {
		return false;
	}

	@Override
	public boolean authenticate(HttpServletResponse response) throws IOException, ServletException {
		return false;
	}

	@Override
	public void login(String username, String password) throws ServletException {

	}

	@Override
	public void logout() throws ServletException {

	}

	@Override
	public Collection<Part> getParts() throws IOException, IllegalStateException, ServletException {
		return null;
	}

	@Override
	public Part getPart(String name) throws IOException, IllegalStateException, ServletException {
		return null;
	}

	@Override
	public <T extends HttpUpgradeHandler> T upgrade(Class<T> handlerClass) throws IOException, ServletException {
		return null;
	}

	@Override
	public Object getAttribute(String name) {
		synchronized (attributes) {
			return attributes.get(name);
		}
	}

	@Override
	public Enumeration<String> getAttributeNames() {
		synchronized (attributes) {
			return Collections.enumeration(attributes.keySet());
		}
	}

	@Override
	public String getCharacterEncoding() {
		return null;
	}

	@Override
	public void setCharacterEncoding(String env) throws UnsupportedEncodingException {

	}

	@Override
	public int getContentLength() {
		return 0;
	}

	@Override
	public long getContentLengthLong() {
		return 0;
	}

	@Override
	public String getContentType() {
		return null;
	}

	@Override
	public ServletInputStream getInputStream() throws IOException {
		return inputStream;
	}

	@Override
	public String getParameter(String name) {
		return null;
	}

	@Override
	public Enumeration<String> getParameterNames() {
		return null;
	}

	@Override
	public String[] getParameterValues(String name) {
		return new String[0];
	}

	@Override
	public Map<String, String[]> getParameterMap() {
		return null;
	}

	@Override
	public String getProtocol() {
		return request.protocolVersion().protocolName();
	}

	@Override
	public String getScheme() {
		return null;
	}

	@Override
	public String getServerName() {
		return null;
	}

	@Override
	public int getServerPort() {
		return 0;
	}

	@Override
	public BufferedReader getReader() throws IOException {
		return null;
	}

	@Override
	public String getRemoteAddr() {
		return null;
	}

	@Override
	public String getRemoteHost() {
		return null;
	}

	@Override
	public void setAttribute(String name, Object o) {
		synchronized (attributes) {
			attributes.put(name, o);
		}
	}

	@Override
	public void removeAttribute(String name) {
		synchronized (attributes) {
			attributes.remove(name);
		}
	}

	@Override
	public Locale getLocale() {
		return null;
	}

	@Override
	public Enumeration<Locale> getLocales() {
		return null;
	}

	@Override
	public boolean isSecure() {
		return false;
	}

	@Override
	public RequestDispatcher getRequestDispatcher(String path) {
		return null;
	}

	@Override
	public String getRealPath(String path) {
		return null;
	}

	@Override
	public int getRemotePort() {
		return 0;
	}

	@Override
	public String getLocalName() {
		return null;
	}

	@Override
	public String getLocalAddr() {
		return null;
	}

	@Override
	public int getLocalPort() {
		return 0;
	}

	@Override
	public ServletContext getServletContext() {
		return servletContext;
	}

	@Override
	public AsyncContext startAsync() {
		return startAsync(this, null);
	}

	@Override
	public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse) {
		return ((NettyAsyncContext) getAsyncContext()).startAsync(servletRequest, servletResponse);
	}

	@Override
	public boolean isAsyncStarted() {
		return null != asyncContext && asyncContext.isAsyncStarted();
	}

	void setAsyncSupported(boolean asyncSupported) {
		this.asyncSupported = asyncSupported;
	}

	@Override
	public boolean isAsyncSupported() {
		return asyncSupported;
	}

	@Override
	public AsyncContext getAsyncContext() {
		if (null == asyncContext) {
			asyncContext = new NettyAsyncContext(this, ctx);
		}
		return asyncContext;
	}

	@Override
	public DispatcherType getDispatcherType() {
		return attributes.containsKey(DISPATCHER_TYPE) ? (DispatcherType) attributes.get(DISPATCHER_TYPE) : DispatcherType.REQUEST;
	}

	public ServletResponse getServletResponse() {
		return servletResponse;
	}
}
